Device for practicing target shooting



Oct, 26, 1965 D. GARCIA vxDAL DEVICE FOR PRACTICING TARGET SHOOTING mw ww Filed May 18 1964 wv m@ ww NM Q mm www vll! $17/ N L Kw United States Patent O 3,214,173 DEVICE FR PRACTICING TARGET SHUTNG Daniel Garcia Vidal, Rincon 487, Montevideo, Uruguay Fried May 1a, 196e, ser. No. assise 9 Claims. (Cl. 273-101.@

The present invention refers to a device for practicing target shooting. More specifically, it relates to a device which may be temporarily incorporated in conventional fire arms, such as rifles, pistols, revolvers and the like smalliarms, of the type having a barrel, a chamber for housing at least one cartridge, and a firing pin, thus making said re arm apt for practicing target shooting even within small spaces, and with satisfactory precision.

For the purpose of this specification and the appendant claims, the expression cartridge is to be understood as including bullets, shells and the like. The expression tiring pin is to be understood as covering any type of bolt, striker, hammer and the like means which are used in the above referred to small arms for firing the cartridge.

Good aim depends just as much on intense practice, as well as on the fact that the shooter must be accustomed to his fire arm. The triggers resistance, the equilibrium and the weight of the fire arm, are decisive factors which influence the precision of the shot.

An amateur is limited in his possibilities to undertake a lot of practice, due to various reasons, one may be space, another security, another good neighbourhoodness, or simply due to comfort. It is for these reasons that he usually cannot exercise his aim using ammunition, within his house or apartment. Obviously this does not not bear in mind the expense which continuous practice, would involve in order that ones aim may be made eilicient with low caliber ammunition.

This invention tends to do away with these limitations, permitting anyone to exercise his aim at a short distance, and at an extremely low cost, and which may be undertaken at any hour of the day or the night, and with any type of small fire arm which one desires to become accustomed to.

As will be later better understood, the present invention may be used with those fire arms which are designed for a single shot or for those pistols or rifles having a magazine wherein the cartridges are raised one by one into firing position by means of a spring or the like as well as in revolvers having a drum or cylinder.

In the first type or arms herein quoted the device of the present invention will consist of a barrel-accessory to be actually housed in the barrel and a firing-pinsensitive-accessory to be housed in the rear portion of the firing arm where the cartridge would be located before the shot and therefore within the reach of the firing pin.

In a revolver the device for practicing target shooting of the present invention will again consist of the same barrel-accessory to be housed in the barrel of the revolver, but, instead of providing a single firing-pin-sensitiveaccessory, as in the previous example, a plurality of these firing-pin-sensitive-accessories will be provided, one for each cartridge chamber in the drum of the revolver. Thus, when shooting is practiced with such a revolver, upon actuation of the trigger the mechanism of the revolver will turn the drum and thereby each cartridge chamber must be provided with an identical firing-pinsensitive-accessory. Since this is merely a particular use of the device for practicing target shooting according to the present invention, as will be apparent to anybody skilled in the art, it is considered unnecessary to refer thereto in more details.

Thus, the present invention consists in a device for practicing target shooting.

. TCC

So as to facilitate the comprehension of the present invention, reference will now be made to the accompanying drawings showing a specific embodiment by way of example.

In the drawings:

FIG. l is a longitudinal section of a iiring-pin-sensitiveaccessory housed in a chamber forming part either of the gun lock of a rifle or of the drum of the revolver (neither shown).

FIG. 2 is a longitudinal section of the barrel-accessory housed in the barrel of the rifle or revolver.

FIG. 3 is a schematically shown target.

FIG. 4 is a longitudinal section of an alternative embodiment of the electricity conducting member and holder.

FIGS. l and 2 are axially aligned because the combination of both defines the device for practicing target shooting according to the present invention and in the way they have been represented and the foregoing eX- planation it will be understood that they are applicable to any small fire arm.

Thus, for practicing target shooting and in order to facilitate the explanation, the target of FIG. 3 has been shown as being arranged in front of the barrel.

Referring first to FIG. l, the firing-pinsensitive-accessory l is housed in a chamber 25 defined by the wall 26 which may either be, as previously explained, the drum of the revolver or the stationary portion of the other types of small lire arms hereinabove referred, all of which have a firing pin, herein merely schematically shown by means of arrow 27. Due to this, the firingepinsensitive-accessory is preferably a cartridge-shaped housing 2, the dimensions of which are similar to those of a cartridge corresponding to the particular fire arm with which one intends to practice. This cartridge-shaped housing 2 has, as all cartridges, a base portion 3 defining a fiange 4 whereby the housing 2 is properly housed in chamber 25, as is well known in the art.

The cartridge-shaped housing 2 is hollow and slidably houses in its interior a block 5 facing an orifice 6 in the base portion 3 whereby the block 5 becomes accessible to firing pin 27.

Separated from block 5 by means of a first spring 7 is a contact member 8 llikewise slidably housed within housing 2 and consisting of a rear collar column 8 and a front nose portion 8 of smaller cross-section than said rear collar portion 8.

The front nose portion 8 projects through the front end 9 of housing 2. A second spring 10, weaker than said rst spring 7, is 4coiled on said front nose portion 8 butting against front end 9 and rear collar portion 8', respectively.

FIG. l shows the firing-pin-sensitive-accessory 1 in relaxed position whereby the front nose portion 8 is in such a position that it does not project out of chamber 25, which is important in case several of these firing-pin-sensitiveaccessories l are housed in a drum of a revolver so that said drum may rotate from 'one to the next position. As will be later better understood, the combination of first Spring 7 and second spring it) defines a unidirectional delay means. It should still be added that at least, housing 2 and Contact member 8 are made of electricity conducting material. Block 5 may be made either of electricity conducting material or insulating material.

The barrelaccessory 11 (see FIG. 2) consists of an electricity insulating casing l2 having a cross-section allowing said casing l2 to be fitted into the barrel 13, the front end of which is usually provided with a front sight 28.

The electricity insulating casing 12 is usually -made of a relatively soft plastic so as to allow the fitting ot barrelaccessory 11 into the barrel 13 Without damaging the boring. Within said casing 12 a concentrated radiant beam projecting means is housed, which, in this particular embodiment consists of a radiant energy source 14 (luminous or not), having a first pole 29 connected to the iirst end 15 of an insulated conductor 15. Said conductor 15 projects out of the casing 12 and barrel 13 and is connectable to one pole of a double pole electricity supply source, schematically indicated at 31D.

An electricity conducting member consists in this embodiment of a bushing 23 connected to the second pole 16 of the radiant energy emitting source 14 and which is stationarily mounted within casing 12. Bushing 23 has a contact end 22 and further supports a holder 17 of insulated material for said source 14.

The holder 17 has a rearwardly projecting stem 17', a cup shaped plunger 19 is slidably housed in the rear por tion of casing 12 and fits over stem 17. A weak spring 18 is housed between said stem 17' `and the chamber 19 defined by said plunger 19, so that in relaxed position of spring 18, plunger 19 is spaced apart from contact end 22. Thus, plunger 19 and bushing 23, in combination, are defining the aforementioned electricity conducting member. The barrel 13 is connected by a conductor 31 to the other pole of supply source 30. Since barrel 13 is in electricity conducting relationship with wall 25 and thereby with housing 2 and contact member 8, it is possible to close the circuit for the radiant energy emitting source 14, as will be later explained.

To maintain the source 14 properly centered, a diaphragm 2t) supports the front end of energy emitting source 14 and is fitted in casing 12. Said diaphragm 2t) having in its geometrical center a perforation 21 which is coaxial with the axis of the barrel 13, the object of which is to limit the cross-section of the bundle of rays which are able to project therefore coaxially with the axis of the barrel 13 `out of the fire `arm and impinge on the target 24 (see FIG. 3) as will be later explained.

Diaphragm 2t) is retained in its position by means of a spring 32, one end of which abuts against said diaphragm 20 while the other end abuts against a sleeve 33 fitted into the front end portion of casing 12. 1f desired, within sleeve 33 a radiant ray concentration device 34 may be housed, the structural details of which will depend 4on the type of radiation employed. This radiant ray concentration device 34 is mainly used in those cases when, the target being at a certain larger distance a ray concentration device is necessary to assure that the shot is accurately defined. Since the structural details of such a radiant ray concentration device are well known by those skilled in optics, it is not considered necessary to be more specific thereabout. It is sufiicient to state that the radiant ray concentration device 34 is movably mounted within sleeve 33.

Finally, target 24 is a device, sensitive to the radiation employed, which will emit a signal on receiving a radiant energy ray if this hits the target, or will mark the inciding point, so that it registers the shots which hit the target during practice.

The radiation may for instance be of the luminous or infrared type. The target may be an electrical arrange ment of photoelectric cells to emit signals according to where the shot has hit or it may be a film sensitive to the radiation that will register the impact, as again will be obvious to those skilled in the art.

Dealing now with the operation of the device for practicing target shooting, it should first be enhanced that in FIGS. l to 3, the inoperative position is shown. Upon tiring pin 27 hitting the block 5, bearing in mind that the second spring 10 is weaker than the first spring 7, the block 5, first spring 7 and contact member 8 will be moved forward as one unit, overcoming the resistance of the second spring 10 and compressing it. Thereby, the front nose portion S will enter in pushing contact with plunger 19 likewise overcoming the resistance of the weak spring 1S and therefore contacting through contact end 22, bushing 23 initiating the closing of the circuit. At this instant, the second spring 1li and weak spring 18 are compressed to their maximum positions, while the first spring 7 is still in substantially uncompressed position so that the kinetic energy stored in block 5 will compress the first spring 7 thereby moving block 5 towards the rear collar portion 8 while the electrical contact is still maintained. Once the first spring 7 has completely absorbed the advancing push of block 5, the first spring 7 will start to expand thereby starting the backstroke of block 5, while contact member 8, plunger 19 and bushing 23 are still in electrical conta-ct. Only when first spring 7 is completely reexpanded, will the second spring 11i, which is weaker than iirst spring 7, have sufficient force to act in cooperation with spring 18 to withdraw plunger 19 from contact end 22. Thus, the circuit is opened and the plunger 19 adopts again the position shown in the drawings. When the timing is so conceived that once the weak spring 18 is completely expanded, the second spring 10 is still under a slight compression and will further expand to thereby dislink the front nose portion 8 from plunger 19. When the second spring 10 is fully expanded, the front nose portion 8 will again be in the position shown in FG. l.

While contact member 8, plunger 19 and bushing 23 are in contact, the circuit fed by supply source 30 is obviously closed. Although in the embodiment shown, the conductor 31 is connected to barrel 13, it is obviously could be connected to any other conducting portion, it being important that actually the cartridge-shaped housing 2 is connected to conductor 31. Thus, it will now be understood that if in several of the appendant claims it is stated that housing 2 is connectable to one of the poles of supply source 3), that this is the fundamental requirement in spite of the fact that in the drawings the conductor 31 is actually connected to the supply source 30.

For a simpler embodiment it would be possible to conceive that the plunger 19 and the bushing 23 are a single stationary member although this would have the drawback that vibrations due to the impact are transmitted to the radiant energy emitting source 14, which should be avoided.

FIG. 4 shows the electricity conducting member 35 which is substantially the combination of plunger 19 and bushing 23 in which simply the holder 36, which is the equivalent of holder 17, is housed.

It is important to obtain a ash from the radiant energy emitting source 14 whose intensity and time are sufficient to register on target 24 but the parameter time must be minimized as a too long flash produces oscillating registrations on the target due to any movement of the fire arm during the time the iiash lasts.

I claim:

1. For a fire-arm of the type having a barrel, a charnber for housing at least one cartridge, and a firing pin, a device for practicing target shooting, comprising a barrel-accessory housable in said barrel and a firing-pinsensitive-accessory to be operated by said firing pin and for controlling said barrel-accessory, said ring-pinsensi tive-accessory being separate from and normally unconnected to said barrel-accessory, said barrel-accessory comprising an electricity insulating casing having a crosssection allowing said casing to be fitted in said barrel, concentrated radiant beam projecting means housed in said casing and having a first pole and a second pole, said first pole being connectable to one pole of a double pole electricity supply source, an electricity conducting member housed in said casing and being connected to said second pole, said electricity conducting member having an end portion accessible from outside of said electricity insulating casing, said firing-pin-sensitive-accessory including a cartridge-shaped electricity conducting housing housa'ble in said chamber, an electricity conducting contact member slidably housed in said cartridge-shaped housing between a first end position wherein said contact member enters in electricity transmitting relationship with said end portion of said electricity conducting member and a second end position wherein said contact member is adapted to be within the reach of said tiring pin, and unidirectional delay means adapted to maintain said contact .member a predetermined interval in said second end position, said housing being connectable to the other pole of said electricity supply source.

2. For a fire-arm of the type having a barrel,r a chamber for housing at least one cartridge and a firing pin, a device for practicing target shooting comprising a barrel-accessory housable in said barrel and a tiring-pinsensitive-accessory to be operated by said firing pin and for controlling said barrel-accessory, said barrel-accessory comprising an electricity insulating casing ttable in said barrel, a radiant energy emitting source having a first pole and a second pole, a stationary bushing housed in said electricity insulating casing, 'a holder made of electricity non-conducting material mounted in said bushing and supporting with said bushing said radiant energy emitting source, a conductor connected to said first pole and connectable to one pole of an outside double pole electricity supply source, said second pole being connected to said bushing, a plunger slidably mounted in said electricity insulating casing, a spring urging said plunger away from said bushing, said plunger being adapted to enter in contact with said bushing upon said spring being compressed thereby establishing an electricity transmitting relationship, said plunger being adapted to project out of said electricity insulating casing upon said spring being in relaxed state, said firing-pin-sensitive-accessory including a cartridge-shaped housing housable in said chamber and having a base portion deiining an orifice, a block slidably housed in said cartridge shaped housing and accessible to said tiring pin through said orice, a contact member slidably housed in said cartridge-shaped housing and spaced' apart from said block, said cartridgeshaped housing having a front end, said contact member projecting out of said front end, a first spring housed between said block and said contact member and a second spring weaker than said first spring abutting against said contact member and said front end of said cartridgeshaped housing, said first and second spring defining a unidirectional de-lay means adapted to maintain said contact member a predetermined interval in contact with said cup-shaped plunger after said firing pin has struck said block, and said housing being connectable to the other pole of said electricity supply source.

3. Fora re-arm of the type having -a barrel, a chamber for housing at least one cartridge and a iiring pin, a device for practicing target shooting comprising a barrelaccessory housable in said barrel and a ring-pin-sensitive-accessory to be operated by said firing pin and for controlling said barrel-accessory, said barrel-accessory comprising an electricity insulating casing of resilient material having a `cross-section allowing said casing to be tted in said barrel, a radiant energy emitting source having a first pole and a second pole, a stationary bushing housed in said electricity insulating casing, a holder made of electricity non-conducting material mounted in said bushing and supporting with said bushing said radiant energy emitting source, an insulated conductor connected to said first pole and connectable to one pole of an outside double pole electricity supply source, said second pole being connected to said bushing, said holder having -a stem projecting out of said bushing, a cup-shaped plunger slidably mounted in said electricity insulating casing and on said stern, a spring housed in said cupshaped plunger and abutting against said stem thereby urging said plunger away from said bushing, said plunger being adapted to enter in contact with said bushing upon said spring being compressed thereby establishing an electricity transmitting relationship, said plunger being adapted to project out of said electricity insulating casing upon said spring being in relaxed state, a sleeve mounted in said casing and spaced apart from said radiant eriergy emitting source Iand remote from said bushing, a

radiant ray concentration device removably mounted in said sleeve for axially concentrating rays, said firing-pin- 5 sensitive-accessory including a cartridge-shaped housing housable in said chamber and having la base portion delining an orifice, a block slidably housed in said cartridgeshaped housing and accessible to said firing pin through sa/id orifice, a contact member slidably housed in said ycartridge-shaped housing and spaced apart from said block, said cartridge-shaped housing having a front end, said contact member projecting out of said front end, a iirst spring housed between said block and said contact member and a second spring weaker than said first spring abutting against said contact member and said front end of said cartridge-shaped housing, said first and second spring defining a unidirectional delay means adapted to maintain said `Contact member a predetermined interval in contact with said cup-shaped plunger after said firing pin has struck said block, and said housing being connectable to the other pole of said electricity supply source.

4. `For a fire-arm of the type having a barrel, a chamber for housing at least one cartridge and a firing pin, a device for practicing target shooting comprising a barrel-accessory housable in said barrel and a firing-pinsensitive-accessory to be operated by said firing pin and for -controlling said barrel-accessory, said barrel-accessory comprising an electricity insulating casing fittable in said barrel, a radiant energy emitting source having a first pole and a second pole, a stationary bushing housed in said electricity insulating casing, a holder made of electricity non-conducting material mounted in said bushing and supporting with said bushing said radiant energy emitting source, a conductor connected to said first pole and connectable to one pole of an outside double pole electricity supply source, said second pole being connected to said bushing, a plunger slidably mounted in said electricity insulating casing, a spring urging said plunger away from said bushing, said plunger being adapted to enter in contact with said bushing upon said spring being compressed thereby establishing an electricity transmitting relationship, said plunger being adapted to project out of said electricity insulating casing upon said spring being in relaxed state, said ring-pin-sensitive-acoessory including a cartridge-shaped housing housable in said chamber and having a base portion defining a flange, said base portion defining an orice, a block slidably housed in said cartridge-shaped housing and accessible to said firing pin through said orifice, a Contact member slidably housed in said cartridge-shaped housing and spaced -apart from said block, said contact member having a rear collar portion and a front nose portion of smaller cross-sectional area than said rear collar portion, said cartridge-shaped housing having a front end, said front nose portion projecting out of said front end, a tir-st spring housed between said block and said rear collar portion and a second spring weaker than said first spring coiled on said front nose portion and abutting against said rear collar portion and said front end of said cartridge-shaped housing, said first and second spring defining a unidirectional delay means adapted to maintain said contact member a predetermined intervals in contact with said cup-shaped plunger after said tiring pin has struck said block,A and said housing being connectable to the other pole of said electricity supply source.

5. For a fire-arm of the type having a barrel, a chamber for housing at least one cartridge and a firing pin, a device for practicing target shooting comprising a barrel-accessory housable in said barrel and a firing-pinsensitive-accessory to be operated Iby said firing pin and for controlling said barrel-accessory, said barrel-accessory comprising an electricity insulating casing iittable in said barrel, a radiant energy emitting source having a first pole and a second pole, a stationary bushing housed 75 in said electricity insulating casing, a holder made of CFI electricity non-conducting material mounted in said Ibushing and supporting with said bushing said radiant energy emitting source, a conductor connected to said first pole and connectable to one pole of an outside double pole electricity supply source, said second pole being connected to said bushing, a plunger slidably mounted in said electricity insulating casing, a spring urging said plunger away from said bushing, said plunger being adapted to enter in contact with said bushing upon said spring being compressed thereby establishing an electricity transmitting relationship, said plunger being adapted to project out of said electricity insulating casing upon said spring being in relaxed state, `a diaphragm housed in said electricity insulating casing remote from said bushing and having a perforation coaxial with the axis of said casing for defining the cross-section of the bundle of rays which said radiant energy emitting sour-ce is capable of emitting, a sleeve mounted in said casing and spaced apart from said diaphragm and remote from said bushing, a radiant ray concentration device removably mounted in said sleeve for concentrating said bundle of rays, a further spring arranged between said diaphragm and said sleeve urging said radiant energy emitting source onto said holder, said firing-pin-sensitive-accessory including a cartridge-shaped housing housable in said chamber and having a base portion, said base portion defining an orifice, a block slidably housed in said cartridge-shaped housing and accessible to said firing pin through said orifice, a contact member slidably housed in said cartridge-shaped housing and spaced apart from said block, said cartridge-shaped housing having a front end, said contact member projecting out of said front end, a first spring housed between said block and said contact member `and a second spring weaker than said rst spring and abutting against said contact member and said front end of said cartridge-shaped housing, said first and second spring defining a unidirectional delay means adapted to maintain said contact member a predetermined interval in contact with said cup-shaped plunger after said firing pin has struck said block, and said housing belng connectable to the other pole of said electriclty supply source.

6. For a lire-arm of the type having a barrel, a chamber for housing at least one cartridge and a firing pin, a device for practicing target shooting comprising a barrelaccessory housable in said barrel and a firing-pin-sensitiveaccessory to be operated by said firing pin and for controlling said barrel-accessory, said barrel-accessory comprising an electricity insulating casing of resilient material having a cross-section allowing said casing to be iitted in said barrel, a radiant energy emitting source havt ing a iirst pole and a second pole, a stationary bushing housed in said electricity insulating casing, a holder made of electricity non-conducting material mounted in sald bushing and supporting with said bushing said radiant energy emitting source, an insulated conductor connected to said iirst pole and connectable to one pole of an outside double pole electricity supply source, said second pole being connected to said bushing, said holder having a stem projecting out of said bushing, a cup-shaped plunger slidably mounted in said electricity insulating casing and on said stem, a spring housed in said cup shaped plunger and abutting against said ystem thereby urging said plunger away from said bushing, said plunger being adapted to enter in contact with said bushing upon said spring being compressed thereby establishing an electricity transmitting relationship, said plunger being adapted to project out of said electricity insulating casing upon said spring being in relaxed state, a diaphragm housed in said electricity insulating casing remote from said bushing and having a perforation coaxial with the axis of said casing for dening the cross-section of the bundle of rays which said radiant energy emitting source is capable of emitting, a sleeve mounted in said casing and spaced apart from said diaphragm and remote from said bushing, a radiant ray concentration device removably mounted in said sleeve for concentrating said bundle of rays, a further spring arranged between said diaphragm and said sleeve urging `said radiant energy emitting source onto said holder, said firing-pin-sensitive-accessory including a cartridge-shaped housing housable in said chamber and having a base portion defining a fiange, said base portion defining an orifice, a block slidably housed in said cartridge-shaped housing and accessible to said tiring pin through said orifice, a contact member slidably housed in said cartridge-shaped housing and spaced apart from said block, said contact member having a rear collar portion and a front nose portion of smaller cross-sectional area than said rear collar portion, said cartridge-shaped housing having a front end, said front nose portion projecting out of said front end, a first spring housed between said block and said rear collar portion and a second spring weaker than said lirst spring coiled on said front nose portion and abutting against said rear collar portion and said front end of said cartridge-shaped housing, said first and second spring defining a unidirectional delay means adapted to maintain said contact member a predetermined interval in contact with said cup-shaped plunger after said firing pin has struck said block, said housing being connectable to the other pole of said electricity supply source, and a target sensitive to the rays to be emitted by said radiant energy emitting source.

7. A device for practicing target shooting comprising a barrel-accessory and a tiring-pin-sensitiVe-accessory for controlling said barrel-accessory, said barrel-accessory comprising an electricity insulating casing of resilient material, a radiant energy emitting source having a rst pole and a second pole, a stationary bushing housed in said electricity insulating casing, a holder made of electricity non-conducting material mounted in said bushing and supporting with said bushing said radiant energy emitting source, an outside double pole electricity supply source, an insulated conductor connected to said first pole and connectable to one pole of said outside double pole electricity supply source, said second pole being connected to said bushing, said holder having a stem projecting out of said bushing, a cup-shaped plunger slidably mounted in said electricity insulating casing and on said stem, a spring housed in said cup-shaped plunger and abutting against said stem thereby urging said plunger away from said bushing, said plunger being adapted to enter in contact with said bushing upon said spring being compressed thereby establishing an electricity transmitting relationship, said plunger being adapted to project out of said electricity insulating casing upon said spring being in relaxed state, a diaphragm housed in said electricity insulating casing remote from said bushing and having a perforation coaxial with the axis of said casing for defining the cross-section of the bundle of rays which said radiant energy emitting source is capable of emitting, a sleeve mounted in said casing and spaced apart from said diaphragm and remote from said bushing, a radiant ray concentration device removably mounted in said sleeve for concentrating said bundle of rays, a further spring arranged between said diaphragm and said sleeve urging said radiant energy emitting source onto said holder, said firing-pin-sensitive-accessory including a cartridge-shaped housing and having a base portion defining a flange, said base portion defining an orice, a block slidably housed in said cartridge-shaped housing and accessible through said orifice, a Contact member slidably housed in said cartridge-shaped housing and spaced apart from said block, said contact member having a rear collar portion and a front nose portion of smaller cross-sectional area than said rear collar portion, said cartridge-shaped housing having a front end, said front nose portion projecting out of said front end, a first spring housed between said block and said rear collar portion and a second spring weaker than said first spring coiled on said front nose portion and abutting against said rear collar portion and said front @11d 0f Said cartridge-shaped housing, said housing being connectable to the other pole of said electricity supply source, and a target sensitive to the rays to be emitted by said radiant energy emitting source.

8. A device for practicing target shooting, comprising a barrelaccessory and a firing-sensitive-accessory for controlling said barrel-accessory, said ring-pin-sensitiveaccessory being separate from and normally unconnected to said barrel-accessory said barrel-accessory comprising an electricity insulating casing, concentrated radiant beam projecting means housed in said casing and having a rst pole and a second pole, a double pole electricity supply source, said rst pole being connectable to one pole of said double pole electricity supply source, an electricity conducting member housed in said casing and being connected to said second pole, said electricity conducting member having an end portion accessible from outside of said electricity insulating casing, said liring-pin-sensitiveaccessory including a cartridge-shaped electricity conducting housing having a base portion, an electricity conducting contact member slidably housed in said cartridgeshaped housing between a first end position wherein said conta-ct member enters in electricity transmitting relationship with said end portion of said electricity conducting member and a second end position wherein said contact member is abutting against said base portion, unidirectional delay means adapted to maintain said contact member a predetermined interval in said second end position, said housing being connectable to the lother pole of said electricity supply source, and a target sensitive to the rays to be emitted by said concentrated radiant beam projecting means.

9. A device for practicing target shooting, comprising a barrel-accessory and a iring-pin-sensitiveaccessory for controlling said barrel-accessory, said iiring-pin-sensitiveaccessory being separate from and normally unconnected to said barrel-accessory, said barrel-accessory comprising an electricity insulating casing, concentrated radiant beam projecting means housed in said casing and having a iirst pole and a second pol-e, said first pole being connectable to one pole of a double pole electricity supply source, an electricity conducting member housed in said casing and being connected to said second pole, said electricity conducting member having an end portion accessible from outside of said electricity insulating casing, said firingpin-sensitive-accessory including a cartridgeashaped electricity conducting housing having a base portion, an electricity conducting contact member slidably housed in said cartridge-shaped housing between a rst end position wherein said contact member enters in electricity transmitting relationship with said end portion of said electricity conducting member and a second end position Wherein said contact member is abutting against said base portion and unidirectional delay means adapted to maintain said Contact member a predetermined interval in said second end position, said housing being connectable to the other pole of said electricity supply source.

References Cited by the Examiner UNITED STATES PATENTS 1,645,881 10/27 Strong 240-6.4l 2,174,813 1/38 Younghusband 273--101.1 2,569,594 10/51 Aagesen 273-101.1 2,826,677 8/55 Jobanek 273-101.1 2,894,117 7/59 Koskey 273-101.1 2,928,190 3/60 Evans 2'73-101.1

BENJAMIN A. BORCHELT, Primary Examiner. SAMUEL FEINBERG, Examiner. 

9. A DEVICE FOR PRACTICING TARGET SHOOTING, COMPRISING A BARREL-ACCESSORY AND A FIRING-PIN-SENSITIVEACCESSORY FOR CONTROLLING SAID BARREL-ACCESSORY, SAID FIRING-PIN-SENSITIVEACCESSORY BEING SEPARATE FROM AND NORMALLY UNCONNECTED TO SAID BARREL-ACCESSORY, SAID BARREL-ACCESSORY COMRPISING AN ELECTRICITY INSULATING CASING AND HAVING A FIRST PROJECTING MEANS HOUSED IN SAID CASING AND HAVING A FIRST POLE AND A SECOND POLE, SAID FIRST POLE BEING CONNECTABLE TO ONE POLE OF A DOUBLE POLE ELECTRICITY SUPPLY SOURCE, AN ELECTRICITY CONDUCTING MEMBER HOUSED IN SAID CASING AND BEING CONNECTED TO SAID SECOND POLE, SAID ELECTRICITY CONDUCTING MEMBER HAVING AN END PORTION ACCESSIBLE FROM OUTSIDE OF SAID ELECTRICITY INSULATING CASING, SAID FIRINGPIN-SENSITIVE-ACCESSORY INCLUDING A CARTRIDGE-SHAPED ELECTRICITY CONDUCTING HOUSING HAVING A BASE PORTION, AN ELECTRICITY CONDUCTING CONTACT MEMBER SLIDABLY HOUSED IN SAID CARTRIDGE-SHAPED HOUSING BETWEEN A FIRST END POSITION WHEREIN SAID CONTACT MEMBER ENTERS IN ELECTRICITY TRANSMITTING RELATIONSHIP WITH SAID END PORTION OF SAID ELECTRICITY CONDUCTING MEMBER AND A SECOND END POSITION WHEREIN SAID CONTACT MEMBER IS ABUTTING AGAINST SAID BASE PORTION AND UNDIRECTIONAL DELAY MEANS ADAPTED TO MAINTAIN SAID CONTACT MEMBER A PREDETERMINED INTERVAL IN SAID SECOND END POSITION, SAID HOUSING BEING CONNECTABLE TO THE OTHER POLE OF SAID ELECTRICITY SUPPLY SOURCE. 